PVC Push Fit Plumbing Fittings Union Straight Pipe Quick Couplings 20mm-160mm

Measure the outer diameter (OD) of your existing pipe — not the inner bore. Match that measurement to the size listed in the variant options (e.g., 20mm OD pipe → select 20mm). If you are unsure, use a caliper or wrap a tape measure around the pipe and divide by π (3.14) to estimate the OD.

No. These PVC push fit couplings are intended for cold-water supply, drainage, and irrigation applications only. PVC softens at elevated temperatures and is not suitable for hot-water or pressurized heating systems. For hot-water lines, consider CPVC or brass fittings rated for higher temperatures.

Yes. The union body consists of two threaded halves that can be unscrewed by hand or with a strap wrench. This allows you to disconnect the joint without cutting the pipe, making it ideal for locations where future access may be needed — such as under sinks, in inspection chambers, or at equipment connections.

No tools or solvent cement are required for the push-fit connection. Simply ensure the pipe end is cut square and deburred, then push it firmly into the fitting socket until you feel it seat against the internal stop. The O-ring creates the seal automatically. The union nut can be hand-tightened to complete the assembly.

The color of the fitting (White or Grey) is a cosmetic choice and does not affect compatibility. Both variants use the same PVC compound and O-ring seal. Choose the color that best matches your existing pipework for a cleaner visual finish.

PVC is inherently resistant to rust, corrosion, and most common chemicals found in water supply and drainage systems. Unlike metal fittings, it will not corrode in damp or outdoor environments, making it a practical choice for garden irrigation, rainwater downpipes, and exposed utility installations. Prolonged UV exposure may cause surface discoloration over time; painting or shielding is recommended for long-term outdoor use.

Yes — the fitting connects any two pipes of the correct outer diameter regardless of pipe color. The fitting color (White or Grey) only affects the visible appearance of the coupling itself, not its function or compatibility with differently colored pipes.